package com.buat.hr.share;

public class Pagination {
/*    
 * 功能：處理分頁
 * 
 * 注：當前頁號從一開始計算
 */

	
	private  int  total=0;               //總記錄數
	private  int  perCount=0;            //每頁的記錄數
	private  int  pageCount=0;           //總頁數
	private  int  pageNo=1;               //頁號
	private  int  startNo=0;            //每頁的起始下標
	private  int  endNo=0;              //每頁的結束下標
	private  String turn=null;
	
	public String getTurn() {          //獲取連接頁面
		return turn;
	}

	public void setTurn(String turn) {   //設置連接頁面
		this.turn = turn;
	}

	public Pagination(int total,int perCount){
		this.total=total;
		this.perCount=perCount;
		this.pageCount=(total-1)/perCount+1;		
	}
	
	public int getEndNo() {              //獲取結束下標
		if(pageNo==pageCount){
			this.endNo=total-1;
		}
		else{
			this.endNo =(pageNo-1)*perCount-1; 
		}
		return endNo;
	}


	public int getPageCount() {                //獲取總頁數
		return pageCount;
	}

	public int getPageNo() {                    //獲取當前頁號
		return pageNo;
	}

	public void setPageNo(int pageNo) {         //設置當前頁號
		if(pageNo<1){
			this.pageNo=1;
		}
		else if(pageNo>pageCount){
			this.pageNo =pageCount;
		}else{
			this.pageNo = pageNo;
		}

	}

	public int getPerCount() {              //獲取每頁的記錄數
		return perCount;
	}

	public int getStartNo() {                //獲取每頁的起始下標
		this.startNo =(this.pageNo-1)*perCount;
		return startNo;
	}
	
	public int getTotal() {
		return total;
	}
		
    public void setPageNo(String pageNo) {		//設置頁號為頁面點擊數字
		try{
			if(pageNo != null){
				this.pageNo = Integer.parseInt(pageNo);
				if(this.pageNo < 1){
					this.pageNo = 1;
				}
				if(this.pageNo > pageCount){
					this.pageNo = pageCount;
				}
			}
		}catch(Exception e){
			
		}
	}	
	
	public int checkPageNo(int pageNo){
		if(pageNo>pageCount){
			pageNo=pageCount;
		}
	    else if(pageNo<1){
			pageNo=1;
		}
		return pageNo;			
	}
		
	public int checkPreviousPageNo(int PageNums){
		if(PageNums<1){
				PageNums=1;
		}
		return PageNums;
	}
	public int checkNextPageNo(int PageNums){
		if(PageNums>pageCount){
			PageNums=pageCount;
				
		}
		return PageNums;
	}
}